Pull-socket.



UNITED sTATEs PATENT oEEioE.

CHARLES R. HABE, OF HARTFORD, CONNECTICUT, ASSIGNOR T0 THE ARROW ELEC-TRIO COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

PULL-SOCKET.

Specication of Letters Patent.

Patented Apr. 21, 1914;.

Application led December 18, 1913. Serial No. 807,466.

.ford and State of Connecticut, have invented a certain new and ImprovedPull-Socket, of which the following is a specification.

My invention relates to pull sockets and particularly to the liningtherefor, the object of my invention being to improve the usualinsulating lining in the feature hereinafter described.

In the accompanying drawing, Figure 1 is a dropped perspective of a pullsocket in the lining of which myinvention is embodied in one form; Fig.2 is a side elevation ot' thel socket, partially broken away; and Fig. 3is a vertical section through the lining alone.

The pull socket here shown, comprises cap 10, shell 11 and socket body12 carrying screw shell terminal 13 and switch' operating pull chain 14;The latter emerges from the casing through a chain bell 15 the base 16of which is here shown mounted on the socket body, but it is to beunderstood that the in vention is equally applicable to pull lsockets inwhich the chain bell is mounted on the shell 11 as has been commonpractice until recently. An insulating lining 17 is generally providedwithin the shell to insulate the terminal 13 therefrom and to preventaccidental cont act between the shell and any of the electrically aliveparts on the socket body. This lining is provided with a slot 18' whichembraces the base of the chain bell 15.

ln pull sockets of the construction illustrated, the slot 18 engageseach side -ot the base 16 of the chain bell 15. As a result ot' thisarrangement it not infrequently hap-` happens that the return of thechain under the influence of the switch spring, 1s prevented through theengagement of the edge of the lining by a ball of the chain. To obviatethis difficulty I have provided a clearance for the chain by bumping thelining outward'adjacent the slot 18 at the point 19 l which registerswith the chain in the assembled position of the parts. While thisclearance may be effected in various other ways, this particular methodhas the advantage of maintaining the insulation as perfect asheretofore. At thc same time it adds to the security of the latchingengagement between the shell and cap, since it presses outward againstthe portion oi the shell in which the latching elements 20 are arrangedand thus aids the spring of the metal in maintaining the latchingengagement tight.

It is obvious that the outward bumping oi? the lining at 19 maintainsthe edge of the lining at this point out of position to engage orobstruct the movement of the chain as itenters or returns 'through thebell.

' I claim as my invention 1. In a pull socket` a casing, a socket bodywithin the same, a chain bell having a base mounted on said body, aninsulating lining surrounding said socket body and having a. slotembracing said base of the chain hell, said lining being bumped outwardadja ent said slot to afford a clearance for the pull chain.substantially as described.

2. ln a pull socket, a casing, a socket body wit-hin the same, a pullchain carried by the latter, a lining interposed between said socketbody and casing, 4aid"lining having a slot to permit the passage ot saidchain therethrough. and being outwardly bumped adjacent said slot toattord a clearanf'c for the chain. substantially as described.

In testimony whereof l have sign :d my name to this specification, inthe presence of two sul'iscribing witnesses.

fili-XS. R. ll LRE. lllitnesses WM. F. TAYLoE, A. E. DIXON.

